“Bwana Devil” was the first 3-D movie and it opened at the Kirby in the first part of 1953, having premiered in New York on 11/26/52. I WAS a lousy movie. I was told by my parents that the Kirby theater became part of the Houston Neiman Marcus. I do remember the long narrow entrance, but the same thing applied to the Metropolitan and Loews State.

The Kirby was still going strong in the mid 1950’s and was the first 3D house in Houston showing “Bhawana Junction” – a lousy movie if I do say so.
The auditorium was located in the rear section of the Kirby Bldg. and was reached from a long, narrow entrance from Main Street.
Neiman Marcus was in the adjacent building next to the Kirby.